JPH07105625A - Music recording medium and music reproducing device - Google Patents

Abstract

PURPOSE:To enable variegated music combination in accordance with setting for a mixing selection by recording a recording medium with music signals and required control signals on plural channels and combining music signals based on control signals at the time of reproducing. CONSTITUTION:Recording contents of a recording medium 1 are demodulated by a signal demodulation circuit 3, and a mixing selection control signal is separated and outputted from a control signal separation circuit 14. At the same time, music signals are separated by a 3-channel signal separation circuit 9. Then, the music signals of the channel-1 and the channel-2 are demodulated from channel-1 and -2 demodulation circuits 5 and 6 respectively, while vocals from a channel-3 demodulation circuit 10, and they are supplied to L-channel and R-channel mixing circuits 11 and 12. These circuits 11 and 12 are controlled by the mixing selection control signal, so that variegated combined music such as on and off operation on the vocals, combination of the vocals and stereo sounds or the vocals and one side of the stereo sounds and mixing level adjustment, etc., can be outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention reproduces music from a digital signal recorded on a compact disc,
The present invention relates to a music recording medium and a music reproducing device capable of selecting vocal ON / OFF and mixing signals of a plurality of channels in the background of karaoke music.

[0002]

2. Description of the Related Art When performing karaoke using a karaoke device, stereo music is played in the back during production and when the person sings, or stereo music is played in the back during practice, while listening to vocals of a singer as a model. Often they want to sing or sing a particular part themselves, or choose music only from the right channel and vocals from the left channel.

FIG. 3 shows the structure of a conventional music reproducing apparatus.
In reproducing from a disc on which music such as a compact disc is recorded, first, the optical signal reading unit 2 is moved from the recording medium 1.
Causes the signal to be read. Furthermore, the signal demodulation circuit 3
At, it is demodulated to the desired signal. 2 from demodulated signal
In the channel signal separation circuit 4, channel 1 and channel 2
And are output separately. The signals of the respective channels are demodulated by the channel 1 demodulation circuit 5 and the channel 2 demodulation circuit 6, and are output as L channel and R channel audio signals by the DA conversion circuit 7 and the DA conversion circuit 8.

In these configurations, a song in which only stereo music is recorded in the back and a song in which vocals to serve as a model are added to the stereo music in the back are separately provided for each of the two songs.
I prepared for the songs. Or, if you want to record monaural music on one side and put monaural vocals on the other side and want only the music on the output side, output the monaural music part to the stereo, and if you want vocals, play the monophonic music on one channel , The other channel had a method of outputting vocals respectively.

[0005]

However, in the above configuration, when playing a song containing only stereo music, a different vocal-recorded song can be reselected and the vocal of a desired portion can be instantly heard. To listen to, or to switch vocals instantly,
There was a problem that music became monaural.

The present invention solves the above problems.
ON / OF of vocals when you want with stereo music
It is an object of the present invention to provide a music recording medium and a music reproducing device capable of performing F, capable of mixing stereo music and vocals, and capable of various combinations such as mixing of a plurality of channels and setting of a mixing level of each channel.

[0007]

In order to achieve the above object, a music recording medium of the present invention has a portion in which music signals of a plurality of channels are recorded and a channel selected from a plurality of channels or mixing between channels. And a portion in which control signals such as selection and mixing levels are recorded.

In order to achieve the above object, the music reproducing apparatus of the present invention comprises an optical reading means for reading an optical signal from a recording medium, a signal demodulating means for demodulating the read optical signal, and a plurality of predetermined signals from the demodulated signal. , A plurality of channel demodulation means for demodulating the separated channels, a plurality of mixing means for selecting or mixing a predetermined signal from the plurality of demodulated channel signals, and a mixing means. From a plurality of channel signals demodulated to the means, a mixing selection control signal input means for controlling selection or mixing of a predetermined signal, a DA conversion means for converting the output of the mixing means into an audio signal, and an output of the signal demodulation means. A control signal separating means for separating the control signal; and a means for outputting the separated control signal. And it is characterized in and.

[0009]

According to the present invention, vocals are separately recorded together with background stereo music such as karaoke, and when vocals are not required when reproducing the recorded medium, only stereo music is reproduced (vocal OFF). When you need, mix and output vocals to stereo music (vocal ON), output monophonic music to one side and monophonic vocal to the other side, and output those outputs from the left channel or right. A music recording medium and a music reproducing device for outputting from a channel or combining various levels at the time of mixing in various ways.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a case in which a plurality of channels are three channels will be shown below, and an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the structure of a music reproducing apparatus according to an embodiment of the present invention. The components 1 to 8 in FIG. 1 are the same components as in FIG. FIG. 2 shows an arrangement example of the control signal portion, the channel 1 and the channel 2 of the music portion, and the vocal portion channel 1 in the recording medium. Consider a case where a disc in which channels 1 and 2 of the music portion and channel 3 of the vocal portion are recorded on a medium such as a compact disc is reproduced as shown in FIG.

First, a signal is read from the recording medium 1 by the optical signal reading section 2. Further, the signal demodulation circuit 3 demodulates to a desired signal. The demodulated signal is separated by a 3-channel signal separation circuit 9 into a music portion, channel 1, channel 2 and a vocal portion, channel 3, and output. Channel 1 demodulation circuit 5,
The signal of each channel is demodulated by the channel 2 demodulation circuit 6 and the channel 3 demodulation circuit 10. The signals to the L channel mixing circuit 11 and the R channel mixing circuit 12 are
The signals of the respective channels of the channel 1 demodulation circuit 5, the channel 2 demodulation circuit 6, and the channel 3 demodulation circuit 10 are input.

A control signal to the L channel mixing circuit 11 and the R channel mixing circuit 12 is applied to the mixing selection control signal input terminal 13. With this mixing selection control signal, the L channel mixing circuit 11,
The output signal of the R channel mixing circuit 12 is determined. (Table 1) shows an example of combinations of outputs according to the mixing selection control signal.

[0014]

[Table 1]

When the mixing selection control signal is set to 0, the input signals of the outputs of the L channel mixing circuit 11 and the R channel mixing circuit 12 are cut off and the outputs are turned off. That is, the L channel mixing circuit 1
The 1 and R channel mixing circuit 12 operates as a circuit breaker for the input signal according to the mixing selection control signal.

When the mixing selection control signal is set to 7, the output of the L channel mixing circuit 11 is selected and output from the input signal of channel 1, and the output of the R channel mixing circuit 12 is selected from the input signal of channel 2. Is output. That is, the L channel mixing circuit 1
The 1 and R channel mixing circuits 12 operate as selectors for the respective music input signals according to the mixing selection control signal. In this case, it is a normal karaoke stereo music without vocals.

When the control signal is set to 16, the output of the L channel mixing circuit 11 is selected from the input signals of channel 1 and channel 2, both signals are mixed and output, and the R channel mixing circuit 12 outputs. For the output, the input signals of channel 2 and channel 3 are selected, and both signals are mixed and output. That is, the L-channel mixing circuit 11 and the R-channel mixing circuit 12 first operate as a selector between two types of input signals and further perform an operation of mixing two types of signals according to the mixing selection control signal. In this case, the stereo music karaoke has vocals on both the L and R channels.

Further, when the mixing selection control signal is set to 23, the mixing level of the channel 3 is reduced, so that the vocal level is reduced with respect to the music signal. As shown in this table, various outputs can be made possible by setting the mixing selection control signal.

After that, the L channel mixing circuit 11,
The output of the R channel mixing circuit 12 is DA
The conversion circuit 7 and the DA conversion circuit 8 provide an L channel and an R channel.
It is output as a channel audio signal.

The input of the mixing selection control signal may be separated from the control signal recorded on the recording medium 1.
This example is an example of the recording medium 1 of the present invention. The control signal separation circuit 14 separates the control signal portion recorded on the disc of FIG. 2 from the output signal of the signal demodulation circuit 3 of FIG. Examples of this control signal are shown in (Table 1). When the signal to the mixing selection control signal output terminal 15 is connected to the mixing selection control signal input terminal 13, various combinations can be realized by the control signal recorded on the medium instead of applying the control signal from the outside.

As described above, according to this embodiment, two songs are separately composed of a song in which only stereo music is recorded in the background and a song in which vocals as a model are added to the stereo music in the background. There is no provision, nor is it necessary to reselect a different vocal recorded song to hear the vocal. By applying the desired mixing selection control signal to the mixing selection control signal input terminal,
By listening to the desired portion of the vocals instantly, the vocals can be switched ON / OFF instantly with the stereo music signal unchanged, and by giving the desired mixing selection control signal or the mixing selection control signal recorded on the recording medium. , The mixing level of each channel can be changed and other various output combinations can be performed.

[0022]

As described above, according to the present invention,
By recording a control signal and music signals or vocals for a plurality of channels on a recording medium and giving a mixing selection control signal for selecting a desired channel from the plurality of channels during reproduction, selection and mixing of a plurality of channels can be performed. . In the case of karaoke, etc., along with stereo music,
Vocals can be turned on and off when desired, and stereo music and vocals can be mixed, and the mixing selection control signals recorded on the recording medium can be read and given, and various combinations can be set by setting the mixing selection control signals. It can be done and its practical effect is great.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an audio reproducing device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of arrangement of signals on a recording medium according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a sound reproducing device in a conventional example.

[Explanation of symbols]

 1 recording medium 2 optical signal reading unit 3 signal demodulation circuit 5 channel 1 demodulation circuit 6 channel 2 demodulation circuit 7, 8 DA conversion circuit 9 3 channel signal separation circuit 10 channel 3 demodulation circuit 11 L channel mixing circuit 12 R channel mixing circuit 13 Mixing selection control signal input terminal 14 Control signal separation circuit 15 Mixing selection control signal output terminal

Claims (2)

[Claims] 1. A music recording medium comprising a portion in which music signals of a plurality of channels are recorded and a portion in which control signals such as selection of an arbitrary channel from among the plurality of channels or mixing selection between channels and a mixing level are recorded. 2. A reproducing apparatus for a medium in which an audio digital signal is recorded, an optical reading unit for reading an optical signal from the recording medium, a signal demodulating unit for demodulating the optical signal read by the optical reading unit, and the signal. Signal separation means for separating a plurality of predetermined channel signals from the demodulated signal of the demodulation means, a plurality of channel demodulation means for demodulating the channels separated by the signal separation means, and a plurality of demodulated signals by the plurality of channel demodulation means A plurality of mixing means for selecting or mixing a predetermined signal from the channel signals, and a mixing selection control signal input means for controlling the selection or mixing of the predetermined signal from the plurality of channel signals demodulated by the mixing means, , DA for converting the output of the mixing means into an audio signal Music reproducing apparatus comprising: the switching means, a control signal separating means for separating the control signal from the output of the signal demodulating means, and means for outputting a control signal separated by the control signal separating means, characterized in that it has.